SQL Trigger using ASP.Net CLR - asp.net

Question

So I'm trying to write a SQL Server Trigger that will call an ASP.Net DLL.
I have got everything talking, but I'm completely stumped that when the triggers fires it can not see the "inserted" table?!?!
Msg 6522, Level 16, State 1, Procedure etrition_train_trigger_clr35, Line 1
A .NET Framework error occurred during execution of user-defined routine or aggregate "etrition_train_trigger_clr35":
System.Data.SqlClient.SqlException: Invalid object name 'inserted'.
System.Data.SqlClient.SqlException:
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()
at System.Data.SqlClient.SqlDataReader.get_MetaData()
at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader()
at CLRTrigger.CLRTrigger.SQLTriggerCall()
Here is my .Net Code. Like I said it fires off when the trigger condition is met, however it can't see the inserted table for some reason.
public static void SQLTriggerCall()
{
SqlTriggerContext triggContext = SqlContext.TriggerContext;
SqlConnection cn = new SqlConnection("Server=vm260101;Database=RT_Training;uid=XXXXXX;pwd=XXXXXXX;Enlist=False;");
cn.Open();
SqlCommand sqlComm = cn.CreateCommand();
SqlPipe sqlP = SqlContext.Pipe;
SqlDataReader dr;
sqlComm.CommandText = "SELECT stu_fee_gu, stu_fee_pay_trans_gu, amount from inserted";
dr = sqlComm.ExecuteReader();
String stu_fee_gu = "";
String stu_fee_pay_trans_gu = "";
float amount = 0;
while (dr.Read())
{
stu_fee_gu = Convert.ToString(dr["stu_fee_gu"]);
stu_fee_pay_trans_gu = Convert.ToString(dr["stu_fee_pay_trans_gu"]);
amount = (float)Convert.ToDecimal(dr["amount"]);
}
cn.Close();
}

Answer 1

The connection cn that you've opened doesn't share the same context as the trigger. Try using the context connection
See the examples under SqlTriggerContext for usage within a trigger, e.g.:
// Retrieve the connection that the trigger is using.
using (SqlConnection connection
= new SqlConnection(#"context connection=true"))
{
connection.Open();
// Get the inserted row.
command = new SqlCommand(#"SELECT * FROM INSERTED;",
connection);
// Get the user name and real name of the inserted user.
reader = command.ExecuteReader();
reader.Read();
//More...
Of course, the rest of that example is very poor, since it assumes only a single row in inserted. Don't make that mistake in your own code.